Improvement in trucks for locomotives



i 2 Sheets-Sheet 1. W. S. HUDSON.

Car Truck.

No; 42,662. Patented May 10; 1864;

'Wiznessei [72 renter Am WWMw N.PETERS, PMoTc-muunmmm, WASHING'IQN, n C

Wz'i 7265586 y 5 N. PETERS. PHQTO-UTHQGRAPHE PATENT. OFFICE.

"WIL'LIAIMQS. Henson, OF PA-TERSON, NEW JERSEY.

,IMVPROVEMENIT 'IN TRUCKS FOR LOCOMOTIVES.

I Specification forming part of Letters'Petoi" N0.'42,6( i2, dated May 10, 1864.

To aZZ whom it .may concern:

Be it known that I, WILLIAM S. HUDSON,. of Paterson, in the 'county of. Passaic, in the State of N ewJ ersey, have inventedacertaiu new and useful Improvement in Trucks for Locomotives; and I. do hereby declare that the following isa full and exact description thereof.

Myinvention relates to the constructionand arrangement of certain equalizing-levers relatively to other parts. By it the weight is well distributed and the shocks and strains are madeless violent. v

The accompanying drawings form a .part of. this: specification, and represent the novel parts,-;with;so;much of the other partsas iS' necessaryt -properly understand the inveutic-11..

$.Figure his a central longitudinal vertical s -ction through the running-gear, or the axles and framing ofa locomotive. Fig. 2 is averticaleross-section in the plane of the axle of the'truck orforward pairof wheels. Fig. 3 is planview' of the ,wheels and axles with a portion of the framing and equalizing-levers. Similar letters of reference indicate like partsin all thefigures.

.Tints are employed to aid in distinguishing. parts, and not to .indicate the material, which may beall iron.

To enable others 1 skilled in the art to make and use my invention, I will proceed to describe it by the aid ofthedrawings. and of the letters of reference marked thereon.

A is the boiler, Bis the framing, O is the truck-frame, and B is the center-pin, of a locomotive provided with what is sometimes known as a Bissell Single Truck, and with three pairs of driving-wheels.

E, F, and G are the several pairs of drivingwheels, and H is a single pair of truck-wheels.

The Bissell truck is well known to the constructors and users of locomotives, and is described in patents issued to Levi Bissell, dated the 4th of August, 1557, and November2,1858. The chief peculiarity of the Bissell truck is its provision for allowing the front end of the locomotive to move sidewise upon the truck in entering upon curves by sliding upon moderately-inclined ways, 0 0, provided for the purpose, and for guiding the truck by the pin B, which connects a rigid extension, 0, on the rear of the truck to a cross-bar on the fixed framing of the engine. All these parts,-so far as. have yet described them, are constructed and arranged in a manner which has long been known.

The springse andfover the bearings of the drivers Eand F are connected by equalizing-' levers I, pivoted to the frame'B at the point t.

The springs g over the bearings of the forward drivers,. G, areconnected to a cross-lever or stout bar, J .v The center of this bar J supports the rear end of a lever, K, whichextends forward under the center line of the bioiler,-and is pivoted at the point k. The forward end of this lever K is forked as repre-' framing O, and is provided with a washer and split key, as represented.

I'twill be observed that the lever K ports the center of the forward end of the boiler at the point k, and that it is itself supported by resting its weight partly upon the forward driving'wheels, G, and partly upon the truck-wheels H. The lever K is free to tilt or vibrate in the vertical plane on the pivot k, and the arrangement of all the parts connected therewith causes the drivingwhcels G and truck-wheels H to mutually operate together in their relation to the irregularities in the track in the same manner as do the several Wheels in a four-wheeled centerbearing truck.

The truck-frame G O, the single pair of truck-wheelsH, with their axle h, moves sidewise relatively to the other parts in the same manner as do the corresponding parts of an ordinary two-wheeled Bissell truck. In doing so every part, of course, describes a small are of a circle, the center of which circle is at B. The bearing-piece N is a little narrower than the recess in O, in which it is carried, so as never to bind on its front or rear face, as the truck performs these slight swivel movements, and it is free to swivel therewith by the e1as- The bolt 12:- extends vertically supticity of the rubber M or by the slight turning of .the bushing L in the framing above. The angle within which all the turning of these parts is practically effected is very slight, too slight to be seriously felt, either by the rubber, in case it is compelled to yield by twisting slightly upon itself, or by the bearings on which the forked end of the lever K rests, in case they are compelled to allow a portion of the motion.

If tracks could be made perfectly uniform and regular, and be maintained in that condition, my invention would be of little importance, but in practice irregularities more or less serious occur at nearly every joint or junction of the ends of the rails, and at certain points in the track, as in passing switches and across tracks, and especially in' passing over small obstacles or defects in the road, the irregularity in the load, which is thrown upon the several wheels, becomes immense, unless, in addition to the use of springs, provision is made byintroducing equalizing-levers in some manner, to induce a unity of action between each pair of wheels and some other pair. The three pairs of drivers E, F, and G have been connected together by equalizing-levers; but

I have never known the two pairs E and F to be connected together into one system, and the forward drivers, G, to be connected to the truck-wheels, so as to form another and independent system, previous to my invention. My invention practically supports the forward portion of the structure at the point 70, and the rear portion of the structure on two points,

i, opposite the sides of the fire-box, thus making a triangle on which the structure is carried, with a certainty of holding each wheel with just sufficient force upon the track, and yielding easily and safely to every ordinary inequality.

The Bissell truck may be provided with four pairs of wheels, thus makingat'en-wheeled engine, and my invention may be applied thereto by arranging the levers J K and their connections in the same manner as above described. It is also obvious that springs may be introduced in the truck in any approved manner. I prefer to employ ordinary boxes and jaws instead of the plain bearings represented in the truck, and to introduce rubber springs or elliptic springs either in the jaws between the boxes and the frame or above the frame directly over each bearing.

I usually introduce a thin annularplate or broad washer of iron over the rubber spring M, as indicated by the two lines close together in that portion of the drawings. This allows the broad bearing-base to slip around with ease upon the top of the rubber M by the slight friction between the broad bearing-base of L and the metal of the washer. This makes in fact still another provision for allowing the truck to swivel.

Having now fully described my invention, what I claim as new therein, and desire to secure by Letters Patent, is as follows:

1. In locomotives disconnecting the forward pair of drivers G from the equalizing mechanism which connects the drivers E and F, and equalizing between the drivers G and the bearing-wheels of the truck, so as to form in dependent equalizing devices, the forward one of which includes the forward drivers and the truck, substantially as and for the purpose herein set forth.

2. The transverse bearing-bar J and lever K, in combination with the forward pair of drivers G, and two or more truck-wheels,'H, and arranged relatively to each other and to the other parts substantially in the manner and for the purpose herein set forth.

3. The bushing L, adapted to move verii cally through the framing B, and arranged relatively to the truck-frame G,and equalizinglever K, substantially as and for the purpose herein set forth.

4. In combination with the last, the rubber spring M, arranged relatively to the bushing I1, and to the bearing-piece N, substantially as and for the purposes herein set forth.

WM. S. HUDSON.

Witnesses:

T. D. STETsoN, H. A. ALBEE. 

